De Somniis (lib. i-ii)

The dreams, therefore, of those men who divide those things which produce the taste according to every species of food, whether it be meat or drink, and such as is not necessary but superfluous, and sought only by the intemperate, have been sufficiently explained. But those of Pharaoh, who appears to exercise sovereignty over these men and over all

Pharaoh says, "In my dream I thought that I was standing by the bank of a river, and seven oxen came up as it were out of the river, of eminent plumpness in their flesh, and beautiful to the view, and fed in the green marsh; and behold, seven other oxen came up out of the river after them, evil to look at and ill-favoured, and lean in their flesh, such that I never saw any leaner in all Egypt;